The User Profile Service failed the logon. User profile cannot be loaded

If you are unable to log on to your Windows 7 or Vista computer by using a temporary user profile, then this article may interest you.

When this happens, you will usually get the following error message:

The User Profile Service failed the logon. User profile cannot be loaded

This issue may occur if the user profile was manually deleted by using the command prompt or by using Windows Explorer and if the “Do not logon users with temporary profiles” Group Policy setting is configured.

A profile that is manually deleted does not remove the security identifier (SID) from the profile list in the registry.

If the SID is present, Windows will try to load the profile by using the ProfileImagePath that points to a nonexistent path. Therefore, the profile cannot be loaded.

Alternatively, you can simply download and use this Fix It 50446 from Microsoft given on KB947215. You may lose your data if you have not backed it up.
You may also want to check out ReProfiler. It is a freeware tool for manipulating user profiles on Windows 7, Vista, XP, 2000, Server 2003 & Server 2008. If you face an issue where you are unable to access a user’s data and settings, check it out!

Anand Khanse is the Admin of TheWindowsClub.com and a 10-year Microsoft MVP Awardee in Windows for the period 2006-16. Please read the entire post & the comments first, create a System Restore Point before making any changes to your system & be careful about any 3rd-party offers while installing freeware.